[3d] Add simple plate Big Green Egg fan adapter
[3d] Add simple plate Big Green Egg fan adapter

CapnBry/HeaterMeter,CapnBry/HeaterMeter,CapnBry/HeaterMeter,CapnBry/HeaterMeter,CapnBry/HeaterMeter,CapnBry/HeaterMeter,CapnBry/HeaterMeter